1618478016 has 28 divisors (see below), whose sum is σ = 4282223592. Its totient is φ = 539492608.

The previous prime is 1618478009. The next prime is 1618478021. The reversal of 1618478016 is 6108748161.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4214595 + ... + 4214978.

Almost surely, 2^1618478016 is an apocalyptic number.

1618478016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1618478016 is an abundant number, since it is smaller than the sum of its proper divisors (2663745576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1618478016 is an equidigital number, since it uses as much as digits as its factorization.

1618478016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8429588 (or 8429578 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 1618478016 is about 40230.3121538971. The cubic root of 1618478016 is about 1174.0923767432.

The spelling of 1618478016 in words is "one billion, six hundred eighteen million, four hundred seventy-eight thousand, sixteen".